Best setup for scratching on Denon prime 2

Title says it all really. What are the best front button settings on the Denon prime 2 for scratching.

Thru, xfader controller knob or any on screen settings best for scratching?

Best for scratching - as logic tells: Sharpest crossfader setting, channels as You like - left/right side… that depends on You… rest - practice

also get yourself one of these, easy to install. the stock fader is not really good for scratching

http://www.innofader.com/products.php?id=15

It is good. For beginners there is no sense to change it. Set the cut in points and sharpness. I can scratch on this crossfader with no issues. Flares, crabs, juggle, what ever - this crossfader is ok for the job.

Not everyone is a scratch DJ hence why I asked. I have only ever mixed trance and Italian house so never needed to scratch. I am just learning now when messing about.

Does that innofader work on the Denon Prime 2? I do not see it supported on their list. http://www.innofader.com/compatible.php